Shai Hulud
Smash Lord
There are two ways to do this. While walking, quickly flick the stick to the opposite direction in a motion similar to pivoting. Depending on how hard you flick the stick, one of two things will happen. Either Nana will do a very short dash (in place, almost) by herself, or both ICs will do a very short dash.
The lighter flick will cause Nana alone to dash, while you maintain control of Popo. You can do smashes with Popo, or use the A or Z buttons to do jab + dash attack, smashes + dash attack (charged or not), or smashes + grab (charged or not).
The stronger flick will cause both climbers to dash, and while Nana is turning around you can do smash attacks with her. For some reason I've only been able to do C-stick forward smashes, in either direction, and nothing else. I don't really understand this but oh well.
This is one of the more useful desynchs in my opinion because you can walk from a wavedash and immediately desynch like this, making it one of the fastest and most unpredictable methods.
The lighter flick will cause Nana alone to dash, while you maintain control of Popo. You can do smashes with Popo, or use the A or Z buttons to do jab + dash attack, smashes + dash attack (charged or not), or smashes + grab (charged or not).
The stronger flick will cause both climbers to dash, and while Nana is turning around you can do smash attacks with her. For some reason I've only been able to do C-stick forward smashes, in either direction, and nothing else. I don't really understand this but oh well.
This is one of the more useful desynchs in my opinion because you can walk from a wavedash and immediately desynch like this, making it one of the fastest and most unpredictable methods.